I got the same effects as you on 300ug. I have not had a chance but I've spoken with a lot of people who tried 450ug+ and they said it was much better. I think some people are much more tolerant to it than others. I didn't get any visuals at all but i got a bit giggly. Yes it takes forever to kick in... I would just say take at least 450ug next time for a full experience. You are correct in the fact it is laid from the same crystal. Partytribe and I have the same source.